The global burden of cancer falls heavily on low-and middle-income countries, where there are critical gaps in the provision of supportive care. Initiatives to translate effective, resource-appropriate prevention and clinical treatments in these settings have been gathering pace, yet few examples exist to guide the translation of interventions that address the high unmet psychosocial needs among cancer patients. The provision of mental health psychosocial support has been shown to reduce psychological distress experienced by cancer patients, which can in turn improve their treatment adherence and outcomes. To address this gap, Global Focus on Cancer has introduced and tested an evidence-based peer-to-peer mentoring program for women with breast or gynecologic cancers in Viet Nam. The details of this intervention including; cultural and resource adaptations, preliminary results of data collected during the trial, and plans for sustaining and scaling the program in Vietnam and to other settings, will be shared during this presentation.